base - Nucleotides are made up of a sugar, a phosphate group and a ......... (4), dna - deoxyribose nucleic acid (3), chromosome - Threadlike structure made of DNA that carries the code for making proteins (10), nucleus - Chromosomes are found in the ................. of a cell (6), doublehelix - The shape of DNA (6,5), nucleotides - The building blocks of DNA (11), basepairs - The rungs of DNA are made up of ........ .......... (4,5),

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